title: Ultra-broadband optical parametric generation in periodically poled stoichiometric LiTaO3.
abstract: We report on broadband gain in an optical parametric generator based on periodically poled 1 mol% magnesium-doped stoichiometric LiTaO3 (PPMg:SLT). More than an octave-spanning parametric gain, stretching from near to mid-infrared, is generated by pumping the crystals close to the point where, at parametric degeneracy, the waves experience zero group-velocity dispersion. Using a picosecond Ti:sapphire source, we measured the broadest parametric gain bandwidths, 180 THz at 10 dB, in PPMg:SLT gratings with a period of 25 µm pumped at 860 nm.
authors.affiliation: KTH-Royal Institute of Technology, Department of Applied Physics, Stockholm, Sweden. ml@laserphysics.kth.se
authors.forename: Martin
authors.initials: M
authors.lastname: Levenius
authors.forename: Valdas
authors.initials: V
authors.lastname: Pasiskevicius
authors.forename: Fredrik
authors.initials: F
authors.lastname: Laurell
authors.forename: Katia
authors.initials: K
authors.lastname: Gallo
mesh_terms: D000669:Amplifiers, Electronic; D004867:Equipment Design; D019544:Equipment Failure Analysis; D054023:Lasers, Semiconductor; D008094:Lithium / Q000737:chemistry*; D008422:Materials Testing; D010087:Oxides / Q000737:chemistry*; D013635:Tantalum / Q000737:chemistry*
chemical_list: D010087:Oxides; C473347:lithium tantalate oxide; D013635:Tantalum; D008094:Lithium